Since the Democrats caucus in early March, there's plenty of time for voters to switch parties and participate in Nebraska's Republican primary.

Since the caucus on March 5, 813 Democrats became Republicans in Douglas County. The reason why is up for debate.

"Hardworking, middle-income voters -- they could be a steamfitter," former Omaha Mayor Hal Daub said. "They could be a welder or maybe someone in construction. They are Democrats, but they are voting for Trump."

"The primary system is at fault here," Jeremy Aspen, who resigned from DCRP said. "The way that we come up with two people in the general election, it's flawed. We go back in time and find that not many people are comfortable with who we are voting for in election day."

Local candidates echoed the analysts on the eve of the primary.

"You've got independents and Democrats saying, 'I want to vote for Trump for president, so they are registering as Republicans," Maxwell said.

"I just have to trust the process works," Bacon said. "I control our own actions and our own campaign team. That's all I can do."